{"timestamp": "2026-09-21 01:46:08", "data": {"options": [{"option": "ATEC261016C00002500", "bid": 5.8, "bid_size": 1.0, "ask": 9.9, "ask_size": 8.0, "iv": 3.5937, "open_interest": 6.0, "volume": 0.0, "delta": 0.9993, "gamma": 0.0002, "vega": 0.0, "theta": -0.0001, "rho": 0.0015, "theo": 7.6867, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 7.0, "last_trade_time": "2026-08-17T12:06:06", "percent_change": 0.0, "prev_day_close": 7.90000009536743}, {"option": "ATEC261016P00002500", "bid": 0.0, "bid_size": 0.0, "ask": 2.15, "ask_size": 11.0, "iv": 7.1789, "open_interest": 2.0, "volume": 0.0, "delta": -0.0002, "gamma": 0.0001, "vega": 0.0, "theta": 0.0, "rho": 0.0, "theo": 0.0002, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.26, "last_trade_time": "2026-05-12T10:04:16", "percent_change": 0.0, "prev_day_close": 0.474999994039536}, {"option": "ATEC261016C00005000", "bid": 4.9, "bid_size": 17.0, "ask": 5.9, "ask_size": 16.0, "iv": 2.0784, "open_interest": 4.0, "volume": 0.0, "delta": 0.9958, "gamma": 0.0037, "vega": 0.0003, "theta": -0.0005, "rho": 0.0038, "theo": 5.1977, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 4.5, "last_trade_time": "2026-08-17T12:09:11", "percent_change": 0.0, "prev_day_close": 5.40000009536743}, {"option": "ATEC261016P00005000", "bid": 0.0, "bid_size": 0.0, "ask": 0.6, "ask_size": 18.0, "iv": 2.3278, "open_interest": 644.0, "volume": 0.0, "delta": -0.0035, "gamma": 0.0037, "vega": 0.0003, "theta": -0.0005, "rho": 0.0, "theo": 0.0031, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.11, "last_trade_time": "2026-08-04T13:33:48", "percent_change": 0.0, "prev_day_close": 0.300000011920929}, {"option": "ATEC261016C00007500", "bid": 2.4, "bid_size": 44.0, "ask": 3.5, "ask_size": 44.0, "iv": 1.1556, "open_interest": 220.0, "volume": 0.0, "delta": 0.9489, "gamma": 0.0508, "vega": 0.0029, "theta": -0.0037, "rho": 0.0053, "theo": 2.7484, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 3.36, "last_trade_time": "2026-09-14T15:51:46", "percent_change": 0.0, "prev_day_close": 2.95000004768372}, {"option": "ATEC261016P00007500", "bid": 0.0, "bid_size": 0.0, "ask": 0.25, "ask_size": 41.0, "iv": 0.9281, "open_interest": 209.0, "volume": 0.0, "delta": -0.0504, "gamma": 0.051, "vega": 0.0029, "theta": -0.0037, "rho": -0.0004, "theo": 0.0453, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.05, "last_trade_time": "2026-09-11T11:47:15", "percent_change": 0.0, "prev_day_close": 0.125}, {"option": "ATEC261016C00010000", "bid": 0.5, "bid_size": 106.0, "ask": 0.9, "ask_size": 42.0, "iv": 0.5285, "open_interest": 342.0, "volume": 48.0, "delta": 0.584, "gamma": 0.2452, "vega": 0.011, "theta": -0.0111, "rho": 0.004, "theo": 0.7353, "change": -0.05, "open": 0.85, "high": 0.85, "low": 0.7, "tick": "down", "last_trade_price": 0.75, "last_trade_time": "2026-09-18T15:50:00", "percent_change": -6.25, "prev_day_close": 0.824999988079071}, {"option": "ATEC261016P00010000", "bid": 0.4, "bid_size": 49.0, "ask": 0.55, "ask_size": 41.0, "iv": 0.5146, "open_interest": 152.0, "volume": 1.0, "delta": -0.4172, "gamma": 0.2468, "vega": 0.011, "theta": -0.0112, "rho": -0.003, "theo": 0.5256, "change": -0.125, "open": 0.45, "high": 0.45, "low": 0.45, "tick": "down", "last_trade_price": 0.45, "last_trade_time": "2026-09-18T13:20:50", "percent_change": -21.7391, "prev_day_close": 0.450000002980232}, {"option": "ATEC261016C00012500", "bid": 0.05, "bid_size": 1.0, "ask": 0.25, "ask_size": 73.0, "iv": 0.6758, "open_interest": 277.0, "volume": 2.0, "delta": 0.1093, "gamma": 0.1188, "vega": 0.0053, "theta": -0.0051, "rho": 0.0008, "theo": 0.0758, "change": -0.055, "open": 0.12, "high": 0.12, "low": 0.12, "tick": "up", "last_trade_price": 0.12, "last_trade_time": "2026-09-18T11:25:57", "percent_change": -31.4286, "prev_day_close": 0.150000000372529}, {"option": "ATEC261016P00012500", "bid": 1.85, "bid_size": 21.0, "ask": 2.8, "ask_size": 10.0, "iv": 0.4279, "open_interest": 5.0, "volume": 0.0, "delta": -0.8989, "gamma": 0.1238, "vega": 0.005, "theta": -0.0054, "rho": -0.004, "theo": 2.3699, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 2.16, "last_trade_time": "2026-09-11T14:48:41", "percent_change": 0.0, "prev_day_close": 2.29999995231628}, {"option": "ATEC261016C00015000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 40.0, "iv": 1.3688, "open_interest": 155.0, "volume": 0.0, "delta": 0.0156, "gamma": 0.0222, "vega": 0.0011, "theta": -0.0011, "rho": 0.0001, "theo": 0.0087, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.05, "last_trade_time": "2026-09-15T10:51:14", "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "ATEC261016P00015000", "bid": 4.0, "bid_size": 15.0, "ask": 5.7, "ask_size": 13.0, "iv": 0.8317, "open_interest": 0.0, "volume": 0.0, "delta": -0.9945, "gamma": 0.0164, "vega": 0.0004, "theta": -0.0008, "rho": -0.0004, "theo": 4.8162, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 7.8, "last_trade_time": "2026-05-06T13:11:56", "percent_change": 0.0, "prev_day_close": 4.75}, {"option": "ATEC261016C00017500", "bid": 0.0, "bid_size": 0.0, "ask": 0.95, "ask_size": 59.0, "iv": 1.8135, "open_interest": 11.0, "volume": 0.0, "delta": 0.003, "gamma": 0.0047, "vega": 0.0003, "theta": -0.0003, "rho": 0.0, "theo": 0.0016, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.05, "last_trade_time": "2026-09-17T15:26:01", "percent_change": 0.0, "prev_day_close": 0.474999994039536}, {"option": "ATEC261016P00017500", "bid": 5.8, "bid_size": 10.0, "ask": 8.4, "ask_size": 8.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": -0.9999, "gamma": 0.0003, "vega": 0.0, "theta": 0.0, "rho": 0.0, "theo": 7.315, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 7.09999990463257}, {"option": "ATEC261016C00020000", "bid": 0.0, "bid_size": 0.0, "ask": 1.75, "ask_size": 9.0, "iv": 2.5412, "open_interest": 8.0, "volume": 0.0, "delta": 0.0008, "gamma": 0.0013, "vega": 0.0001, "theta": -0.0001, "rho": 0.0, "theo": 0.0004, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.05, "last_trade_time": "2026-05-19T10:44:59", "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "ATEC261016P00020000", "bid": 8.6, "bid_size": 15.0, "ask": 10.7, "ask_size": 15.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": -1.0, "gamma": 0.0, "vega": 0.0, "theta": 0.0, "rho": 0.0, "theo": 9.815, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 9.69999980926514}, {"option": "ATEC261016C00022500", "bid": 0.0, "bid_size": 0.0, "ask": 1.95, "ask_size": 17.0, "iv": 2.8825, "open_interest": 5.0, "volume": 0.0, "delta": 0.0002, "gamma": 0.0004, "vega": 0.0, "theta": 0.0, "rho": 0.0, "theo": 0.0001, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.15, "last_trade_time": "2026-04-30T13:37:19", "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "ATEC261016P00022500", "bid": 10.6, "bid_size": 14.0, "ask": 13.6, "ask_size": 15.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": -1.0, "gamma": 0.0, "vega": 0.0, "theta": 0.0, "rho": 0.0, "theo": 12.315, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 14.44, "last_trade_time": "2026-06-15T13:47:52", "percent_change": 0.0, "prev_day_close": 12.0999999046326}, {"option": "ATEC261016C00025000", "bid": 0.0, "bid_size": 0.0, "ask": 0.95, "ask_size": 13.0, "iv": 2.4816, "open_interest": 0.0, "volume": 0.0, "delta": 0.0001, "gamma": 0.0001, "vega": 0.0, "theta": 0.0, "rho": 0.0, "theo": 0.0, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.474999994039536}, {"option": "ATEC261016P00025000", "bid": 13.6, "bid_size": 15.0, "ask": 16.1, "ask_size": 8.0, "iv": 1.6329, "open_interest": 0.0, "volume": 0.0, "delta": -1.0, "gamma": 0.0, "vega": 0.0, "theta": 0.0, "rho": 0.0, "theo": 14.815, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 14.6500000953674}, {"option": "ATEC261120C00002500", "bid": 5.8, "bid_size": 15.0, "ask": 9.9, "ask_size": 12.0, "iv": 2.0902, "open_interest": 0.0, "volume": 0.0, "delta": 0.983, "gamma": 0.0058, "vega": 0.0023, "theta": -0.004, "rho": 0.0038, "theo": 7.8748, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 7.95000004768372}, {"option": "ATEC261120P00002500", "bid": 0.0, "bid_size": 0.0, "ask": 1.75, "ask_size": 11.0, "iv": 4.3114, "open_interest": 0.0, "volume": 0.0, "delta": -0.0227, "gamma": 0.0058, "vega": 0.0023, "theta": -0.004, "rho": -0.0006, "theo": 0.1123, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "ATEC261120C00005000", "bid": 4.0, "bid_size": 16.0, "ask": 6.1, "ask_size": 15.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": 0.9412, "gamma": 0.0209, "vega": 0.0054, "theta": -0.006, "rho": 0.0072, "theo": 5.4978, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 5.5}, {"option": "ATEC261120P00005000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 13.0, "iv": 1.686, "open_interest": 0.0, "volume": 0.0, "delta": -0.0647, "gamma": 0.021, "vega": 0.0054, "theta": -0.006, "rho": -0.0014, "theo": 0.2159, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "ATEC261120C00007500", "bid": 2.6, "bid_size": 13.0, "ask": 4.6, "ask_size": 8.0, "iv": 1.3055, "open_interest": 0.0, "volume": 0.0, "delta": 0.8484, "gamma": 0.0602, "vega": 0.0102, "theta": -0.0076, "rho": 0.0095, "theo": 3.1976, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 3.19999992847443}, {"option": "ATEC261120P00007500", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 13.0, "iv": 0.9206, "open_interest": 0.0, "volume": 0.0, "delta": -0.1583, "gamma": 0.0607, "vega": 0.0102, "theta": -0.0077, "rho": -0.0031, "theo": 0.3974, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "ATEC261120C00010000", "bid": 0.15, "bid_size": 5.0, "ask": 3.5, "ask_size": 33.0, "iv": 1.3077, "open_interest": 0.0, "volume": 0.0, "delta": 0.6039, "gamma": 0.1428, "vega": 0.0165, "theta": -0.0084, "rho": 0.0086, "theo": 1.2352, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 1.32499998807907}, {"option": "ATEC261120P00010000", "bid": 0.05, "bid_size": 22.0, "ask": 2.1, "ask_size": 24.0, "iv": 0.7321, "open_interest": 0.0, "volume": 0.0, "delta": -0.4075, "gamma": 0.1459, "vega": 0.0164, "theta": -0.0086, "rho": -0.0071, "theo": 0.9228, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.925000011920929}, {"option": "ATEC261120C00012500", "bid": 0.15, "bid_size": 7.0, "ask": 0.65, "ask_size": 29.0, "iv": 0.631, "open_interest": 0.0, "volume": 0.0, "delta": 0.2888, "gamma": 0.1232, "vega": 0.0145, "theta": -0.0075, "rho": 0.0044, "theo": 0.4317, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.375000014901161}, {"option": "ATEC261120P00012500", "bid": 1.15, "bid_size": 13.0, "ask": 4.4, "ask_size": 13.0, "iv": 0.7558, "open_interest": 0.0, "volume": 0.0, "delta": -0.7326, "gamma": 0.1294, "vega": 0.0139, "theta": -0.0079, "rho": -0.0105, "theo": 2.6271, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 2.42500007152557}, {"option": "ATEC261120C00015000", "bid": 0.0, "bid_size": 0.0, "ask": 1.55, "ask_size": 14.0, "iv": 1.1867, "open_interest": 0.0, "volume": 0.0, "delta": 0.1683, "gamma": 0.0748, "vega": 0.0106, "theta": -0.0066, "rho": 0.0025, "theo": 0.255, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "ATEC261120P00015000", "bid": 3.9, "bid_size": 13.0, "ask": 5.5, "ask_size": 8.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": -0.857, "gamma": 0.0806, "vega": 0.0095, "theta": -0.0071, "rho": -0.0107, "theo": 4.9601, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 4.70000004768372}, {"option": "ATEC261120C00017500", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 13.0, "iv": 1.1059, "open_interest": 0.0, "volume": 0.0, "delta": 0.1179, "gamma": 0.0507, "vega": 0.0084, "theta": -0.006, "rho": 0.0017, "theo": 0.1869, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "ATEC261120P00017500", "bid": 6.3, "bid_size": 13.0, "ask": 8.4, "ask_size": 12.0, "iv": 0.8253, "open_interest": 0.0, "volume": 0.0, "delta": -0.9092, "gamma": 0.0562, "vega": 0.0068, "theta": -0.0066, "rho": -0.0095, "theo": 7.3989, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 7.05000019073486}, {"option": "ATEC261120C00020000", "bid": 0.0, "bid_size": 0.0, "ask": 0.95, "ask_size": 14.0, "iv": 1.3666, "open_interest": 0.0, "volume": 0.0, "delta": 0.0909, "gamma": 0.0376, "vega": 0.0069, "theta": -0.0055, "rho": 0.0013, "theo": 0.1502, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "ATEC261120P00020000", "bid": 7.6, "bid_size": 16.0, "ask": 11.3, "ask_size": 8.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": -0.9375, "gamma": 0.0423, "vega": 0.005, "theta": -0.0063, "rho": -0.0089, "theo": 9.8681, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 9.55000019073486}, {"option": "ATEC261218C00002500", "bid": 5.8, "bid_size": 10.0, "ask": 9.9, "ask_size": 10.0, "iv": 1.9896, "open_interest": 3.0, "volume": 0.0, "delta": 0.9843, "gamma": 0.0047, "vega": 0.0018, "theta": -0.0016, "rho": 0.0044, "theo": 7.7428, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 7.89, "last_trade_time": "2026-09-11T13:59:26", "percent_change": 0.0, "prev_day_close": 7.7000002861023}, {"option": "ATEC261218P00002500", "bid": 0.0, "bid_size": 0.0, "ask": 1.75, "ask_size": 13.0, "iv": 3.5891, "open_interest": 0.0, "volume": 0.0, "delta": -0.0142, "gamma": 0.0045, "vega": 0.0018, "theta": -0.0016, "rho": -0.0005, "theo": 0.052, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.875}, {"option": "ATEC261218C00005000", "bid": 4.3, "bid_size": 7.0, "ask": 6.7, "ask_size": 14.0, "iv": 1.2795, "open_interest": 7.0, "volume": 0.0, "delta": 0.9453, "gamma": 0.0198, "vega": 0.0054, "theta": -0.0031, "rho": 0.0105, "theo": 5.3606, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 5.4, "last_trade_time": "2026-09-11T12:28:36", "percent_change": 0.0, "prev_day_close": 5.5}, {"option": "ATEC261218P00005000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 13.0, "iv": 1.3998, "open_interest": 5.0, "volume": 0.0, "delta": -0.0523, "gamma": 0.0198, "vega": 0.0054, "theta": -0.0031, "rho": -0.0016, "theo": 0.1454, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 0.65, "last_trade_time": "2026-05-11T15:24:27", "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "ATEC261218C00007500", "bid": 2.7, "bid_size": 47.0, "ask": 3.8, "ask_size": 46.0, "iv": 0.8671, "open_interest": 25.0, "volume": 0.0, "delta": 0.8428, "gamma": 0.0611, "vega": 0.0121, "theta": -0.005, "rho": 0.0138, "theo": 3.1179, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 3.62, "last_trade_time": "2026-09-14T14:09:47", "percent_change": 0.0, "prev_day_close": 3.25}, {"option": "ATEC261218P00007500", "bid": 0.0, "bid_size": 0.0, "ask": 0.8, "ask_size": 52.0, "iv": 0.7819, "open_interest": 356.0, "volume": 0.0, "delta": -0.1553, "gamma": 0.0615, "vega": 0.0122, "theta": -0.0051, "rho": -0.0044, "theo": 0.3755, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.6, "last_trade_time": "2026-08-24T13:41:12", "percent_change": 0.0, "prev_day_close": 0.425000006332994}, {"option": "ATEC261218C00010000", "bid": 1.3, "bid_size": 29.0, "ask": 1.65, "ask_size": 33.0, "iv": 0.6711, "open_interest": 135.0, "volume": 2.0, "delta": 0.5941, "gamma": 0.1268, "vega": 0.0197, "theta": -0.0065, "rho": 0.0119, "theo": 1.3284, "change": 0.095, "open": 1.47, "high": 1.47, "low": 1.47, "tick": "no_change", "last_trade_price": 1.47, "last_trade_time": "2026-09-18T14:24:12", "percent_change": 6.90909, "prev_day_close": 1.47499996423721}, {"option": "ATEC261218P00010000", "bid": 0.85, "bid_size": 37.0, "ask": 1.6, "ask_size": 38.0, "iv": 0.6788, "open_interest": 6.0, "volume": 0.0, "delta": -0.4071, "gamma": 0.1288, "vega": 0.0197, "theta": -0.0066, "rho": -0.0108, "theo": 1.063, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.95, "last_trade_time": "2026-09-16T13:22:36", "percent_change": 0.0, "prev_day_close": 1.02500003576279}, {"option": "ATEC261218C00012500", "bid": 0.3, "bid_size": 37.0, "ask": 0.75, "ask_size": 38.0, "iv": 0.6054, "open_interest": 314.0, "volume": 0.0, "delta": 0.3026, "gamma": 0.116, "vega": 0.0177, "theta": -0.0057, "rho": 0.0065, "theo": 0.4926, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.4, "last_trade_time": "2026-09-17T13:32:12", "percent_change": 0.0, "prev_day_close": 0.525000005960464}, {"option": "ATEC261218P00012500", "bid": 2.0, "bid_size": 42.0, "ask": 3.2, "ask_size": 36.0, "iv": 0.5166, "open_interest": 1.0, "volume": 0.0, "delta": -0.706, "gamma": 0.1207, "vega": 0.0174, "theta": -0.0059, "rho": -0.0164, "theo": 2.7179, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 2.4, "last_trade_time": "2026-09-14T10:34:58", "percent_change": 0.0, "prev_day_close": 2.60000002384186}, {"option": "ATEC261218C00015000", "bid": 0.0, "bid_size": 0.0, "ask": 0.35, "ask_size": 13.0, "iv": 0.5958, "open_interest": 14.0, "volume": 0.0, "delta": 0.1602, "gamma": 0.073, "vega": 0.0124, "theta": -0.0044, "rho": 0.0035, "theo": 0.2382, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 0.15, "last_trade_time": "2026-09-11T09:39:09", "percent_change": 0.0, "prev_day_close": 0.174999997019768}, {"option": "ATEC261218P00015000", "bid": 4.0, "bid_size": 13.0, "ask": 6.8, "ask_size": 7.0, "iv": 0.9498, "open_interest": 17.0, "volume": 0.0, "delta": -0.8557, "gamma": 0.0791, "vega": 0.0113, "theta": -0.0047, "rho": -0.0163, "theo": 4.9652, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 6.0, "last_trade_time": "2026-08-07T12:58:57", "percent_change": 0.0, "prev_day_close": 4.69999980926514}, {"option": "ATEC261218C00017500", "bid": 0.0, "bid_size": 0.0, "ask": 1.15, "ask_size": 18.0, "iv": 1.0663, "open_interest": 43.0, "volume": 0.0, "delta": 0.0981, "gamma": 0.0468, "vega": 0.0088, "theta": -0.0034, "rho": 0.0021, "theo": 0.1432, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.25, "last_trade_time": "2026-06-18T11:40:22", "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "ATEC261218P00017500", "bid": 6.1, "bid_size": 15.0, "ask": 8.2, "ask_size": 15.0, "iv": 0.0, "open_interest": 9.0, "volume": 0.0, "delta": -0.9235, "gamma": 0.0539, "vega": 0.007, "theta": -0.0039, "rho": -0.013, "theo": 7.3762, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 3.33, "last_trade_time": "2026-01-21T15:22:38", "percent_change": 0.0, "prev_day_close": 7.15000009536743}, {"option": "ATEC261218C00020000", "bid": 0.0, "bid_size": 0.0, "ask": 0.95, "ask_size": 13.0, "iv": 1.1451, "open_interest": 245.0, "volume": 0.0, "delta": 0.0667, "gamma": 0.0322, "vega": 0.0066, "theta": -0.0028, "rho": 0.0014, "theo": 0.0975, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.15, "last_trade_time": "2026-05-26T11:11:43", "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "ATEC261218P00020000", "bid": 7.6, "bid_size": 10.0, "ask": 11.5, "ask_size": 10.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": -0.9595, "gamma": 0.0385, "vega": 0.004, "theta": -0.0035, "rho": -0.0087, "theo": 9.8393, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 9.55000019073486}, {"option": "ATEC261218C00022500", "bid": 0.0, "bid_size": 0.0, "ask": 2.15, "ask_size": 14.0, "iv": 1.6512, "open_interest": 315.0, "volume": 0.0, "delta": 0.0488, "gamma": 0.0235, "vega": 0.0051, "theta": -0.0023, "rho": 0.001, "theo": 0.0717, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.05, "last_trade_time": "2026-05-15T09:56:48", "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "ATEC261218P00022500", "bid": 10.1, "bid_size": 10.0, "ask": 14.2, "ask_size": 10.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": -0.9796, "gamma": 0.0253, "vega": 0.002, "theta": -0.0026, "rho": -0.0047, "theo": 12.3238, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 12.0999999046326}, {"option": "ATEC261218C00025000", "bid": 0.0, "bid_size": 0.0, "ask": 1.95, "ask_size": 15.0, "iv": 1.706, "open_interest": 101.0, "volume": 0.0, "delta": 0.0375, "gamma": 0.0179, "vega": 0.0041, "theta": -0.002, "rho": 0.0008, "theo": 0.0556, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 0.15, "last_trade_time": "2026-05-22T14:47:17", "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "ATEC261218P00025000", "bid": 12.6, "bid_size": 10.0, "ask": 16.7, "ask_size": 10.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": -0.9904, "gamma": 0.0148, "vega": 0.0011, "theta": -0.0015, "rho": -0.003, "theo": 14.8177, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 14.6000003814697}, {"option": "ATEC261218C00030000", "bid": 0.0, "bid_size": 0.0, "ask": 1.15, "ask_size": 13.0, "iv": 1.6224, "open_interest": 1.0, "volume": 0.0, "delta": 0.0245, "gamma": 0.0115, "vega": 0.0029, "theta": -0.0015, "rho": 0.0005, "theo": 0.0369, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.05, "last_trade_time": "2026-05-07T11:21:23", "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "ATEC261218P00030000", "bid": 17.6, "bid_size": 10.0, "ask": 21.7, "ask_size": 10.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": -0.9984, "gamma": 0.0033, "vega": 0.0002, "theta": 0.0, "rho": -0.0006, "theo": 19.8151, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 19.6000003814697}, {"option": "ATEC261218C00035000", "bid": 0.0, "bid_size": 0.0, "ask": 2.15, "ask_size": 13.0, "iv": 2.1022, "open_interest": 0.0, "volume": 0.0, "delta": 0.0175, "gamma": 0.0081, "vega": 0.0022, "theta": -0.0012, "rho": 0.0004, "theo": 0.0267, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "ATEC261218P00035000", "bid": 22.6, "bid_size": 10.0, "ask": 26.7, "ask_size": 10.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": -0.9998, "gamma": 0.0004, "vega": 0.0, "theta": 0.0, "rho": 0.0, "theo": 24.815, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 24.6000003814697}, {"option": "ATEC261218C00040000", "bid": 0.0, "bid_size": 0.0, "ask": 1.95, "ask_size": 13.0, "iv": 2.1647, "open_interest": 0.0, "volume": 0.0, "delta": 0.0133, "gamma": 0.0061, "vega": 0.0017, "theta": -0.001, "rho": 0.0003, "theo": 0.0205, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "ATEC261218P00040000", "bid": 27.6, "bid_size": 10.0, "ask": 31.7, "ask_size": 10.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": -1.0, "gamma": 0.0, "vega": 0.0, "theta": 0.0, "rho": 0.0, "theo": 29.815, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 29.6000003814697}, {"option": "ATEC270115C00002500", "bid": 5.8, "bid_size": 10.0, "ask": 8.3, "ask_size": 10.0, "iv": 0.0, "open_interest": 7.0, "volume": 0.0, "delta": 0.9754, "gamma": 0.0059, "vega": 0.0031, "theta": -0.0022, "rho": 0.0054, "theo": 7.8035, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 5.94, "last_trade_time": "2026-05-20T13:44:37", "percent_change": 0.0, "prev_day_close": 7.05000019073486}, {"option": "ATEC270115P00002500", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 17.0, "iv": 2.2324, "open_interest": 0.0, "volume": 0.0, "delta": -0.0226, "gamma": 0.0058, "vega": 0.0031, "theta": -0.0021, "rho": -0.001, "theo": 0.1115, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "ATEC270115C00005000", "bid": 4.3, "bid_size": 29.0, "ask": 6.3, "ask_size": 18.0, "iv": 0.801, "open_interest": 50.0, "volume": 1.0, "delta": 0.927, "gamma": 0.0213, "vega": 0.0078, "theta": -0.0035, "rho": 0.0126, "theo": 5.4759, "change": -0.25, "open": 5.5, "high": 5.5, "low": 5.5, "tick": "down", "last_trade_price": 5.5, "last_trade_time": "2026-09-18T11:50:46", "percent_change": -4.34783, "prev_day_close": 5.29999995231628}, {"option": "ATEC270115P00005000", "bid": 0.0, "bid_size": 0.0, "ask": 0.3, "ask_size": 38.0, "iv": 0.9361, "open_interest": 40.0, "volume": 0.0, "delta": -0.0699, "gamma": 0.0213, "vega": 0.0078, "theta": -0.0035, "rho": -0.0029, "theo": 0.2529, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.45, "last_trade_time": "2026-06-22T11:30:08", "percent_change": 0.0, "prev_day_close": 0.150000005960464}, {"option": "ATEC270115C00007500", "bid": 3.1, "bid_size": 42.0, "ask": 3.4, "ask_size": 49.0, "iv": 0.7512, "open_interest": 485.0, "volume": 0.0, "delta": 0.8221, "gamma": 0.0564, "vega": 0.015, "theta": -0.0049, "rho": 0.0168, "theo": 3.2913, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 3.4, "last_trade_time": "2026-09-11T15:37:52", "percent_change": 0.0, "prev_day_close": 3.29999995231628}, {"option": "ATEC270115P00007500", "bid": 0.3, "bid_size": 51.0, "ask": 0.8, "ask_size": 37.0, "iv": 0.7904, "open_interest": 232.0, "volume": 0.0, "delta": -0.1754, "gamma": 0.057, "vega": 0.015, "theta": -0.0049, "rho": -0.0068, "theo": 0.5331, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 0.75, "last_trade_time": "2026-09-10T15:55:12", "percent_change": 0.0, "prev_day_close": 0.550000011920929}, {"option": "ATEC270115C00010000", "bid": 1.1, "bid_size": 22.0, "ask": 2.15, "ask_size": 20.0, "iv": 0.6491, "open_interest": 555.0, "volume": 0.0, "delta": 0.6012, "gamma": 0.1078, "vega": 0.0223, "theta": -0.0057, "rho": 0.0152, "theo": 1.5363, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 1.92, "last_trade_time": "2026-09-16T13:40:00", "percent_change": 0.0, "prev_day_close": 1.75}, {"option": "ATEC270115P00010000", "bid": 0.95, "bid_size": 48.0, "ask": 1.4, "ask_size": 15.0, "iv": 0.577, "open_interest": 86.0, "volume": 0.0, "delta": -0.3998, "gamma": 0.11, "vega": 0.0224, "theta": -0.0058, "rho": -0.0142, "theo": 1.2478, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 1.15, "last_trade_time": "2026-09-16T13:40:16", "percent_change": 0.0, "prev_day_close": 1.22499996423721}, {"option": "ATEC270115C00012500", "bid": 0.6, "bid_size": 2.0, "ask": 0.95, "ask_size": 19.0, "iv": 0.6441, "open_interest": 895.0, "volume": 0.0, "delta": 0.348, "gamma": 0.1052, "vega": 0.0214, "theta": -0.0054, "rho": 0.0094, "theo": 0.6774, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.9, "last_trade_time": "2026-09-15T15:51:30", "percent_change": 0.0, "prev_day_close": 0.775000005960464}, {"option": "ATEC270115P00012500", "bid": 2.2, "bid_size": 13.0, "ask": 3.3, "ask_size": 18.0, "iv": 0.5391, "open_interest": 114.0, "volume": 0.0, "delta": -0.6605, "gamma": 0.1099, "vega": 0.0211, "theta": -0.0056, "rho": -0.0213, "theo": 2.8735, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 4.8, "last_trade_time": "2026-05-22T15:29:57", "percent_change": 0.0, "prev_day_close": 2.75}, {"option": "ATEC270115C00015000", "bid": 0.1, "bid_size": 21.0, "ask": 0.45, "ask_size": 25.0, "iv": 0.592, "open_interest": 771.0, "volume": 0.0, "delta": 0.2133, "gamma": 0.0747, "vega": 0.0169, "theta": -0.0047, "rho": 0.0058, "theo": 0.3885, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 0.45, "last_trade_time": "2026-09-15T14:55:11", "percent_change": 0.0, "prev_day_close": 0.25000000372529}, {"option": "ATEC270115P00015000", "bid": 4.1, "bid_size": 19.0, "ask": 5.3, "ask_size": 16.0, "iv": 0.0, "open_interest": 843.0, "volume": 0.0, "delta": -0.8023, "gamma": 0.0806, "vega": 0.0158, "theta": -0.005, "rho": -0.0229, "theo": 5.0799, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 5.0, "last_trade_time": "2026-03-31T09:54:50", "percent_change": 0.0, "prev_day_close": 4.70000004768372}, {"option": "ATEC270115C00017500", "bid": 0.0, "bid_size": 0.0, "ask": 1.15, "ask_size": 12.0, "iv": 0.9302, "open_interest": 119.0, "volume": 0.0, "delta": 0.1478, "gamma": 0.0536, "vega": 0.0134, "theta": -0.0041, "rho": 0.004, "theo": 0.2678, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 0.5, "last_trade_time": "2026-08-03T12:59:53", "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "ATEC270115P00017500", "bid": 5.2, "bid_size": 15.0, "ask": 7.8, "ask_size": 16.0, "iv": 0.0, "open_interest": 1.0, "volume": 0.0, "delta": -0.8733, "gamma": 0.0601, "vega": 0.0116, "theta": -0.0046, "rho": -0.0216, "theo": 7.459, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 7.0, "last_trade_time": "2026-04-21T10:19:14", "percent_change": 0.0, "prev_day_close": 7.15000009536743}, {"option": "ATEC270115C00020000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 14.0, "iv": 0.9329, "open_interest": 302.0, "volume": 0.0, "delta": 0.1115, "gamma": 0.0405, "vega": 0.011, "theta": -0.0036, "rho": 0.003, "theo": 0.2038, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 0.15, "last_trade_time": "2026-06-05T11:20:41", "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "ATEC270115P00020000", "bid": 7.7, "bid_size": 10.0, "ask": 11.7, "ask_size": 10.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": -0.9144, "gamma": 0.0476, "vega": 0.0086, "theta": -0.0043, "rho": -0.0189, "theo": 9.8971, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 9.9500002861023}, {"option": "ATEC270115C00022500", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 16.0, "iv": 1.0365, "open_interest": 436.0, "volume": 0.0, "delta": 0.0888, "gamma": 0.032, "vega": 0.0093, "theta": -0.0033, "rho": 0.0024, "theo": 0.1645, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.2, "last_trade_time": "2026-07-06T09:54:36", "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "ATEC270115P00022500", "bid": 10.1, "bid_size": 10.0, "ask": 14.2, "ask_size": 10.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": -0.9414, "gamma": 0.0397, "vega": 0.0062, "theta": -0.0041, "rho": -0.0155, "theo": 12.3616, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 6.42, "last_trade_time": "2026-01-12T10:59:38", "percent_change": 0.0, "prev_day_close": 12.0999999046326}, {"option": "ATEC270115C00025000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 17.0, "iv": 1.1256, "open_interest": 536.0, "volume": 0.0, "delta": 0.0735, "gamma": 0.0262, "vega": 0.0081, "theta": -0.003, "rho": 0.002, "theo": 0.1379, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 0.16, "last_trade_time": "2026-07-21T11:52:58", "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "ATEC270115P00025000", "bid": 12.6, "bid_size": 10.0, "ask": 16.5, "ask_size": 10.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": -0.96, "gamma": 0.0325, "vega": 0.0044, "theta": -0.0039, "rho": -0.0116, "theo": 14.8409, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 9.07, "last_trade_time": "2026-01-12T10:59:38", "percent_change": 0.0, "prev_day_close": 14.5500001907349}, {"option": "ATEC270115C00030000", "bid": 0.0, "bid_size": 0.0, "ask": 1.15, "ask_size": 22.0, "iv": 1.417, "open_interest": 23.0, "volume": 0.0, "delta": 0.0544, "gamma": 0.019, "vega": 0.0064, "theta": -0.0026, "rho": 0.0014, "theo": 0.1043, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.1, "last_trade_time": "2026-07-10T15:19:00", "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "ATEC270115P00030000", "bid": 17.6, "bid_size": 10.0, "ask": 21.7, "ask_size": 10.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": -0.9826, "gamma": 0.0198, "vega": 0.002, "theta": -0.0031, "rho": -0.0064, "theo": 19.8217, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 19.6000003814697}, {"option": "ATEC270115C00035000", "bid": 0.0, "bid_size": 0.0, "ask": 1.15, "ask_size": 16.0, "iv": 1.5412, "open_interest": 0.0, "volume": 0.0, "delta": 0.0429, "gamma": 0.0147, "vega": 0.0052, "theta": -0.0023, "rho": 0.0011, "theo": 0.0839, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "ATEC270115P00035000", "bid": 22.6, "bid_size": 10.0, "ask": 26.7, "ask_size": 10.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": -0.9931, "gamma": 0.0094, "vega": 0.0006, "theta": -0.0008, "rho": -0.0022, "theo": 24.8165, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 24.6000003814697}, {"option": "ATEC270115C00040000", "bid": 0.0, "bid_size": 0.0, "ask": 0.4, "ask_size": 16.0, "iv": 1.3174, "open_interest": 1.0, "volume": 0.0, "delta": 0.0354, "gamma": 0.0119, "vega": 0.0045, "theta": -0.002, "rho": 0.0009, "theo": 0.0702, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 1.5, "last_trade_time": "2025-11-11T11:41:40", "percent_change": 0.0, "prev_day_close": 0.200000002980232}, {"option": "ATEC270115P00040000", "bid": 27.6, "bid_size": 10.0, "ask": 31.7, "ask_size": 10.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": -0.9976, "gamma": 0.004, "vega": 0.0, "theta": 0.0, "rho": 0.0, "theo": 29.815, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 29.6000003814697}, {"option": "ATEC270416C00002500", "bid": 5.8, "bid_size": 10.0, "ask": 9.9, "ask_size": 10.0, "iv": 1.3232, "open_interest": 0.0, "volume": 0.0, "delta": 0.9654, "gamma": 0.0067, "vega": 0.0054, "theta": -0.0016, "rho": 0.0082, "theo": 7.8946, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 7.90000009536743}, {"option": "ATEC270416P00002500", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 17.0, "iv": 1.6914, "open_interest": 0.0, "volume": 0.0, "delta": -0.0309, "gamma": 0.0064, "vega": 0.0054, "theta": -0.0018, "rho": -0.0028, "theo": 0.2046, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "ATEC270416C00005000", "bid": 4.9, "bid_size": 10.0, "ask": 6.5, "ask_size": 12.0, "iv": 1.003, "open_interest": 5.0, "volume": 0.0, "delta": 0.9047, "gamma": 0.0211, "vega": 0.0126, "theta": -0.0028, "rho": 0.018, "theo": 5.6953, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 5.63, "last_trade_time": "2026-09-17T10:56:28", "percent_change": 0.0, "prev_day_close": 5.70000004768372}, {"option": "ATEC270416P00005000", "bid": 0.0, "bid_size": 0.0, "ask": 0.75, "ask_size": 17.0, "iv": 0.9331, "open_interest": 0.0, "volume": 0.0, "delta": -0.0896, "gamma": 0.021, "vega": 0.0125, "theta": -0.003, "rho": -0.0071, "theo": 0.4552, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.375}, {"option": "ATEC270416C00007500", "bid": 2.8, "bid_size": 19.0, "ask": 4.4, "ask_size": 16.0, "iv": 0.7265, "open_interest": 0.0, "volume": 0.0, "delta": 0.796, "gamma": 0.0462, "vega": 0.0214, "theta": -0.0038, "rho": 0.0247, "theo": 3.696, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 3.85000002384186}, {"option": "ATEC270416P00007500", "bid": 0.45, "bid_size": 15.0, "ask": 1.15, "ask_size": 13.0, "iv": 0.7258, "open_interest": 0.0, "volume": 0.0, "delta": -0.1985, "gamma": 0.0469, "vega": 0.0215, "theta": -0.004, "rho": -0.0146, "theo": 0.8978, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.775000005960464}, {"option": "ATEC270416C00010000", "bid": 1.5, "bid_size": 11.0, "ask": 2.45, "ask_size": 16.0, "iv": 0.5991, "open_interest": 26.0, "volume": 0.0, "delta": 0.6224, "gamma": 0.0749, "vega": 0.029, "theta": -0.0044, "rho": 0.0242, "theo": 2.112, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 2.27, "last_trade_time": "2026-09-11T15:48:56", "percent_change": 0.0, "prev_day_close": 2.25}, {"option": "ATEC270416P00010000", "bid": 1.5, "bid_size": 19.0, "ask": 2.2, "ask_size": 17.0, "iv": 0.6769, "open_interest": 0.0, "volume": 0.0, "delta": -0.3762, "gamma": 0.0772, "vega": 0.0291, "theta": -0.0046, "rho": -0.0256, "theo": 1.7605, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 1.85000002384186}, {"option": "ATEC270416C00012500", "bid": 0.85, "bid_size": 30.0, "ask": 1.35, "ask_size": 6.0, "iv": 0.5883, "open_interest": 33.0, "volume": 0.0, "delta": 0.4315, "gamma": 0.0824, "vega": 0.0302, "theta": -0.0044, "rho": 0.0184, "theo": 1.1647, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 1.47, "last_trade_time": "2026-09-15T15:59:15", "percent_change": 0.0, "prev_day_close": 1.15000000596046}, {"option": "ATEC270416P00012500", "bid": 2.8, "bid_size": 16.0, "ask": 4.3, "ask_size": 12.0, "iv": 0.7006, "open_interest": 0.0, "volume": 0.0, "delta": -0.5756, "gamma": 0.0873, "vega": 0.0298, "theta": -0.0045, "rho": -0.0362, "theo": 3.2771, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 3.35000002384186}, {"option": "ATEC270416C00015000", "bid": 0.05, "bid_size": 21.0, "ask": 0.9, "ask_size": 17.0, "iv": 0.5318, "open_interest": 7.0, "volume": 0.0, "delta": 0.2967, "gamma": 0.0706, "vega": 0.0266, "theta": -0.0039, "rho": 0.0131, "theo": 0.7151, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.78, "last_trade_time": "2026-09-14T13:44:23", "percent_change": 0.0, "prev_day_close": 0.4749999884516}, {"option": "ATEC270416P00015000", "bid": 4.3, "bid_size": 11.0, "ask": 6.3, "ask_size": 8.0, "iv": 0.6232, "open_interest": 0.0, "volume": 0.0, "delta": -0.7209, "gamma": 0.078, "vega": 0.0254, "theta": -0.0042, "rho": -0.0402, "theo": 5.3096, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 5.19999980926514}, {"option": "ATEC270416C00017500", "bid": 0.0, "bid_size": 0.0, "ask": 0.7, "ask_size": 18.0, "iv": 0.592, "open_interest": 0.0, "volume": 0.0, "delta": 0.2159, "gamma": 0.0567, "vega": 0.0226, "theta": -0.0035, "rho": 0.0096, "theo": 0.4955, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 0.374999994412065}, {"option": "ATEC270416P00017500", "bid": 5.1, "bid_size": 8.0, "ask": 9.1, "ask_size": 10.0, "iv": 0.0, "open_interest": 0.0, "volume": 0.0, "delta": -0.8118, "gamma": 0.0658, "vega": 0.0199, "theta": -0.0038, "rho": -0.0396, "theo": 7.5841, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 6.90000009536743}, {"option": "ATEC280121C00002500", "bid": 5.5, "bid_size": 17.0, "ask": 10.5, "ask_size": 14.0, "iv": 0.8469, "open_interest": 739.0, "volume": 0.0, "delta": 0.96, "gamma": 0.0052, "vega": 0.0108, "theta": -0.0007, "rho": 0.0158, "theo": 8.5914, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 8.3, "last_trade_time": "2026-09-17T09:31:54", "percent_change": 0.0, "prev_day_close": 8.25}, {"option": "ATEC280121P00002500", "bid": 0.0, "bid_size": 0.0, "ask": 5.0, "ask_size": 16.0, "iv": 0.0, "open_interest": 2.0, "volume": 0.0, "delta": -0.0433, "gamma": 0.0053, "vega": 0.011, "theta": -0.0016, "rho": -0.0134, "theo": 0.7286, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.4, "last_trade_time": "2026-07-10T15:22:52", "percent_change": 0.0, "prev_day_close": 2.5}, {"option": "ATEC280121C00005000", "bid": 5.5, "bid_size": 38.0, "ask": 8.5, "ask_size": 18.0, "iv": 1.1744, "open_interest": 208.0, "volume": 46.0, "delta": 0.8976, "gamma": 0.0145, "vega": 0.0216, "theta": -0.0016, "rho": 0.032, "theo": 6.7474, "change": -0.61, "open": 5.64, "high": 5.64, "low": 5.64, "tick": "down", "last_trade_price": 5.64, "last_trade_time": "2026-09-18T11:57:20", "percent_change": -9.76, "prev_day_close": 7.20000004768372}, {"option": "ATEC280121P00005000", "bid": 0.1, "bid_size": 26.0, "ask": 1.25, "ask_size": 19.0, "iv": 0.797, "open_interest": 20.0, "volume": 0.0, "delta": -0.1078, "gamma": 0.0151, "vega": 0.0219, "theta": -0.0023, "rho": -0.026, "theo": 1.2328, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 1.05, "last_trade_time": "2026-05-07T09:54:28", "percent_change": 0.0, "prev_day_close": 0.675000000745058}, {"option": "ATEC280121C00007500", "bid": 4.0, "bid_size": 35.0, "ask": 7.0, "ask_size": 16.0, "iv": 0.9868, "open_interest": 663.0, "volume": 0.0, "delta": 0.8116, "gamma": 0.0278, "vega": 0.0322, "theta": -0.0022, "rho": 0.0438, "theo": 4.9925, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 4.0, "last_trade_time": "2026-09-03T11:00:17", "percent_change": 0.0, "prev_day_close": 5.45000004768372}, {"option": "ATEC280121P00007500", "bid": 0.0, "bid_size": 0.0, "ask": 5.0, "ask_size": 12.0, "iv": 1.0334, "open_interest": 301.0, "volume": 0.0, "delta": -0.198, "gamma": 0.0294, "vega": 0.0328, "theta": -0.0027, "rho": -0.0407, "theo": 1.8354, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 2.3, "last_trade_time": "2026-05-12T09:42:51", "percent_change": 0.0, "prev_day_close": 2.5}, {"option": "ATEC280121C00010000", "bid": 2.8, "bid_size": 35.0, "ask": 4.0, "ask_size": 35.0, "iv": 0.6688, "open_interest": 269.0, "volume": 8.0, "delta": 0.7001, "gamma": 0.0422, "vega": 0.0413, "theta": -0.0026, "rho": 0.0482, "theo": 3.523, "change": 0.0, "open": 3.5, "high": 3.5, "low": 3.5, "tick": "no_change", "last_trade_price": 3.5, "last_trade_time": "2026-09-18T11:58:04", "percent_change": 0.0, "prev_day_close": 3.5}, {"option": "ATEC280121P00010000", "bid": 0.6, "bid_size": 36.0, "ask": 5.0, "ask_size": 16.0, "iv": 0.7116, "open_interest": 49.0, "volume": 0.0, "delta": -0.3184, "gamma": 0.046, "vega": 0.0418, "theta": -0.0029, "rho": -0.0579, "theo": 2.7448, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 3.54, "last_trade_time": "2026-09-09T14:50:40", "percent_change": 0.0, "prev_day_close": 2.80000001192093}, {"option": "ATEC280121C00012500", "bid": 2.15, "bid_size": 38.0, "ask": 3.0, "ask_size": 33.0, "iv": 0.6605, "open_interest": 165.0, "volume": 1.0, "delta": 0.5841, "gamma": 0.0504, "vega": 0.0462, "theta": -0.0028, "rho": 0.0454, "theo": 2.5468, "change": -0.05, "open": 2.7, "high": 2.7, "low": 2.7, "tick": "down", "last_trade_price": 2.7, "last_trade_time": "2026-09-18T15:21:03", "percent_change": -1.81818, "prev_day_close": 2.64999997615814}, {"option": "ATEC280121P00012500", "bid": 1.8, "bid_size": 32.0, "ask": 6.5, "ask_size": 14.0, "iv": 0.6475, "open_interest": 152.0, "volume": 0.0, "delta": -0.4478, "gamma": 0.0573, "vega": 0.0458, "theta": -0.0031, "rho": -0.0743, "theo": 4.1816, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 4.4, "last_trade_time": "2026-09-11T15:09:13", "percent_change": 0.0, "prev_day_close": 4.14999997615814}, {"option": "ATEC280121C00015000", "bid": 1.1, "bid_size": 34.0, "ask": 3.8, "ask_size": 35.0, "iv": 0.7571, "open_interest": 113.0, "volume": 0.0, "delta": 0.4949, "gamma": 0.0505, "vega": 0.0472, "theta": -0.003, "rho": 0.0401, "theo": 2.0208, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 1.8, "last_trade_time": "2026-08-27T14:13:54", "percent_change": 0.0, "prev_day_close": 2.50000005960464}, {"option": "ATEC280121P00015000", "bid": 5.3, "bid_size": 14.0, "ask": 8.0, "ask_size": 16.0, "iv": 0.7871, "open_interest": 196.0, "volume": 4.0, "delta": -0.5513, "gamma": 0.06, "vega": 0.0454, "theta": -0.0032, "rho": -0.0859, "theo": 6.0963, "change": 1.36, "open": 5.15, "high": 7.11, "low": 5.15, "tick": "up", "last_trade_price": 7.11, "last_trade_time": "2026-09-18T11:58:04", "percent_change": 23.6522, "prev_day_close": 6.65000009536743}, {"option": "ATEC280121C00017500", "bid": 0.0, "bid_size": 0.0, "ask": 3.5, "ask_size": 17.0, "iv": 0.7009, "open_interest": 7.0, "volume": 0.0, "delta": 0.4345, "gamma": 0.0475, "vega": 0.0465, "theta": -0.0031, "rho": 0.0356, "theo": 1.7371, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 1.49, "last_trade_time": "2026-06-17T14:03:56", "percent_change": 0.0, "prev_day_close": 1.85000002384186}, {"option": "ATEC280121P00017500", "bid": 5.5, "bid_size": 6.0, "ask": 10.5, "ask_size": 16.0, "iv": 0.6335, "open_interest": 0.0, "volume": 0.0, "delta": -0.6243, "gamma": 0.0589, "vega": 0.043, "theta": -0.0032, "rho": -0.094, "theo": 8.2686, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 7.84999990463257}, {"option": "ATEC280121C00020000", "bid": 0.0, "bid_size": 0.0, "ask": 3.3, "ask_size": 39.0, "iv": 0.7526, "open_interest": 80.0, "volume": 0.0, "delta": 0.393, "gamma": 0.0441, "vega": 0.0454, "theta": -0.0032, "rho": 0.0322, "theo": 1.5664, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 2.51, "last_trade_time": "2026-09-10T13:45:57", "percent_change": 0.0, "prev_day_close": 1.70000004768372}, {"option": "ATEC280121P00020000", "bid": 9.5, "bid_size": 28.0, "ask": 12.5, "ask_size": 7.0, "iv": 0.839, "open_interest": 11.0, "volume": 6.0, "delta": -0.6766, "gamma": 0.0567, "vega": 0.0401, "theta": -0.0032, "rho": -0.0989, "theo": 10.5616, "change": 1.08, "open": 10.59, "high": 11.08, "low": 10.59, "tick": "up", "last_trade_price": 11.08, "last_trade_time": "2026-09-18T11:58:04", "percent_change": 10.8, "prev_day_close": 11.0}, {"option": "ATEC280121C00022500", "bid": 0.0, "bid_size": 0.0, "ask": 3.1, "ask_size": 39.0, "iv": 0.7911, "open_interest": 73.0, "volume": 0.0, "delta": 0.363, "gamma": 0.041, "vega": 0.0443, "theta": -0.0033, "rho": 0.0296, "theo": 1.4526, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 1.38, "last_trade_time": "2026-04-30T15:52:16", "percent_change": 0.0, "prev_day_close": 1.60000002384186}, {"option": "ATEC280121P00022500", "bid": 10.0, "bid_size": 12.0, "ask": 15.0, "ask_size": 16.0, "iv": 0.6383, "open_interest": 0.0, "volume": 0.0, "delta": -0.7167, "gamma": 0.0549, "vega": 0.0373, "theta": -0.0032, "rho": -0.0992, "theo": 12.9167, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 12.25}, {"option": "ATEC280121C00025000", "bid": 0.0, "bid_size": 0.0, "ask": 3.3, "ask_size": 16.0, "iv": 0.8652, "open_interest": 142.0, "volume": 0.0, "delta": 0.3403, "gamma": 0.0384, "vega": 0.0433, "theta": -0.0034, "rho": 0.0276, "theo": 1.3703, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 2.34, "last_trade_time": "2026-02-20T15:16:01", "percent_change": 0.0, "prev_day_close": 1.5}, {"option": "ATEC280121P00025000", "bid": 12.5, "bid_size": 17.0, "ask": 17.5, "ask_size": 16.0, "iv": 0.6982, "open_interest": 6.0, "volume": 0.0, "delta": -0.7484, "gamma": 0.0532, "vega": 0.0344, "theta": -0.0032, "rho": -0.1013, "theo": 15.3079, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 16.34, "last_trade_time": "2026-06-30T15:06:03", "percent_change": 0.0, "prev_day_close": 14.75}, {"option": "ATEC280121C00030000", "bid": 0.0, "bid_size": 0.0, "ask": 2.9, "ask_size": 8.0, "iv": 0.9044, "open_interest": 7.0, "volume": 0.0, "delta": 0.3079, "gamma": 0.0344, "vega": 0.0415, "theta": -0.0035, "rho": 0.0246, "theo": 1.2576, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.8, "last_trade_time": "2026-09-11T09:30:01", "percent_change": 0.0, "prev_day_close": 1.47500002384186}, {"option": "ATEC280121P00030000", "bid": 17.5, "bid_size": 13.0, "ask": 22.5, "ask_size": 16.0, "iv": 0.8008, "open_interest": 0.0, "volume": 0.0, "delta": -0.7978, "gamma": 0.0506, "vega": 0.0297, "theta": -0.0032, "rho": -0.0975, "theo": 20.1533, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 19.75}, {"option": "ATEC280121C00035000", "bid": 0.0, "bid_size": 0.0, "ask": 2.8, "ask_size": 8.0, "iv": 0.96, "open_interest": 218.0, "volume": 0.0, "delta": 0.2856, "gamma": 0.0314, "vega": 0.04, "theta": -0.0036, "rho": 0.0226, "theo": 1.182, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.57, "last_trade_time": "2026-09-10T13:45:57", "percent_change": 0.0, "prev_day_close": 1.47500002384186}, {"option": "ATEC280121P00035000", "bid": 22.5, "bid_size": 15.0, "ask": 27.5, "ask_size": 16.0, "iv": 0.8871, "open_interest": 0.0, "volume": 0.0, "delta": -0.8361, "gamma": 0.0497, "vega": 0.0252, "theta": -0.0031, "rho": -0.0928, "theo": 25.0466, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "no_change", "last_trade_price": 0.0, "last_trade_time": null, "percent_change": 0.0, "prev_day_close": 24.75}, {"option": "ATEC280121C00040000", "bid": 0.0, "bid_size": 0.0, "ask": 2.85, "ask_size": 16.0, "iv": 1.022, "open_interest": 16.0, "volume": 0.0, "delta": 0.269, "gamma": 0.0292, "vega": 0.0388, "theta": -0.0036, "rho": 0.021, "theo": 1.1264, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "down", "last_trade_price": 0.3, "last_trade_time": "2026-07-21T12:05:17", "percent_change": 0.0, "prev_day_close": 1.42499995231628}, {"option": "ATEC280121P00040000", "bid": 27.5, "bid_size": 13.0, "ask": 32.5, "ask_size": 16.0, "iv": 0.9614, "open_interest": 0.0, "volume": 0.0, "delta": -0.8669, "gamma": 0.0484, "vega": 0.0208, "theta": -0.0029, "rho": -0.0818, "theo": 29.971, "change": 0.0, "open": 0.0, "high": 0.0, "low": 0.0, "tick": "up", "last_trade_price": 32.45, "last_trade_time": "2026-05-08T12:19:19", "percent_change": 0.0, "prev_day_close": 29.75}], "symbol": "ATEC", "security_type": "stock", "exchange_id": 2, "current_price": 10.4, "price_change": -0.1, "price_change_percent": -0.9823, "bid": 10.2, "ask": 10.44, "bid_size": 400, "ask_size": 200, "open": 10.24, "high": 10.54, "low": 10.17, "close": 10.18, "prev_day_close": 10.18, "volume": 2791490, "iv30": 55.932, "iv30_change": 0.0, "iv30_change_percent": 0.0, "seqno": 0, "last_trade_time": "2026-09-18T15:59:59", "tick": "down"}, "symbol": "ATEC"}